.code-input{
  width:calc( 100% - 200px );
}
.code-btn{
  display: inline-block;
  width:200px;
  height: 36px;
  line-height: 36px;
  text-align: center;
  background-color: #dbdbdb;
  border: 1px solid #cbc9c9;
  box-sizing: border-box;
  cursor: pointer;
}